With a few arbitraryconstant for every formula, the average errors are less than 2% for all the formulas in this thesis.
虽然每个公式中只有少数几个系数，但是本文中所有公式的平均误差都小于2%。
2
The state variable approach of modern control theory provides a uniform and powerful method of representing systems of arbitrary order, linear or nonlinear, with time-varying or constant coefficients.
It is found that the total system imbalance power during fault is almost a constant and may be calculated from the imbalance power of arbitrary generator.